220266257 has 2 divisors, whose sum is σ = 220266258. Its totient is φ = 220266256.

The previous prime is 220266247. The next prime is 220266269. The reversal of 220266257 is 752662022.

220266257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208542481 + 11723776 = 14441^2 + 3424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220266257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220266247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110133128 + 110133129.

It is an arithmetic number, because the mean of its divisors is an integer number (110133129).

Almost surely, 2^220266257 is an apocalyptic number.

It is an amenable number.

220266257 is a deficient number, since it is larger than the sum of its proper divisors (1).

220266257 is an equidigital number, since it uses as much as digits as its factorization.

220266257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 220266257 is about 14841.3697817957. The cubic root of 220266257 is about 603.9245123340.

The spelling of 220266257 in words is "two hundred twenty million, two hundred sixty-six thousand, two hundred fifty-seven".